Unsur-unsur di bawah ini yang mempunyai enam elektron valensi adalah ....
UTS KIMIA KELAS X TAHUN PELAJARAN 2023/2024

Quiz
•
Chemistry
•
10th Grade
•
Hard
Agus Supriyatna
Used 20+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
8O
11Na
14Si
6C
29Cu
2.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Salah satu isotop rubidium mempunyai nomor atom 37 dan nomor massa 85. Atom tersebut mengandung ....
48 proton, 37 netron, dan 48 elektron
37 proton, 37 netron, dan 48 elektron
37 proton, 48 netron, dan 37 elektron
37 proton, 85 netron, dan 37 elektron
48 proton, 37 elektron, dan 37 netron
3.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Susunan elektron pada kulit K, L, M, N untuk kalsium yang memiliki nomor atom 20 adalah ...
2, 8, 10, 0
2, 0, 6, 2
2, 8, 9, 1
2, 8, 20
2, 8, 8, 2
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Inti atom terdiri atas ....
proton
proton dan neutron
neutron
neutron dan elektron
elektron
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Gagasan utama yang disumbangkan oleh teori atom Bohr adalah ....
gagasan tentang inti atom
gagasan tentang gejala isotop
gagasan tentang nomor atom
gagasan tentang partikel sub atom
gagasan tentang tingkat-tingkat energi dalam atom
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Apabila unsur-unsur disusun berdasarkan kenaikan massa atom relatifnya, ternyata unsur-unsur yang berselisih 1 oktaf menunjukkan persamaan sifat. Kenyataan ini ditemukan oleh…….
J.W. Dobereiner
Lothar Meyer
A.R. Newland
Roentgen
D. I. Mendelee
7.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Diketahui unsur 9A, 10B, 19C, 20D, dan 35E. Unsur-unsur yang terletak dalam satu golongan yang sama adalah ....
A dan B
C an D
A dan C
D dan E
A dan E
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